PRODUCT ADVANTAGES: 1.The white noise machine is also perfect for the elderly who has sleep problems. The well chosen sounds help you to sleep faster and stay asleep longer. Creating a peaceful environment that provides better sleep quality for all ages. 2.Our white noise sound machine can help you improve concentration and be more efficient. It also helps to keep discussions and talks private. Use white noise machine in your office, study, classroom or private occasions to minimize outside distractions. 3.With the portable size, our noise sound machine can be easily put into your handbag, backpack or suitcase, making it the perfect travel companion. Travel is more fun when you're well rested! PRODUCT SPECIFICATIONS: Power mode: USB Function: timing, music function How it works: Sound sleep aid Battery life: 6-8h (inclusive) Built-in battery capacity: 1000mAh-1200mAh (included) Whether built-in battery: built-in battery WHAT WILL YOU GET? 1X Sleep instrument 1X Color box 1X Charging cable 1X Instruction Manual? WAKE UP WITH A GOOD NIGHT : Our soft white sound machine provides nature sounds, so you can get into your zone quicker and deeper like sleeping, meditation, yoga, or napping. if you have any questions, contact us for any inquires in any time. Best white noise machine, your sleeping helper, gets you perfect start and end of the day!. ? LIGHTWEIGHT AND PORTABLE - With the sleek compact size and built-in rechargeable battery. The design of the device is simple and intuitive, light and easy to carry, and the design of large enough buttons allows you to easily change the track, turn on off the night light, change the color of the ambient light. ? ADJUSTABLE BABY NIGHT LIGHT - The white noise machine has unique night lights and adjustable brightness. (white, warm, colorful). Adjust the brightness to make it suitable for any environment. You can use these ambient lights to decorate your environment. ? PERFECT FOR SLEEPING - Helps mask disruptive environmental noises which helps to create a perfect sleeping environment and effectively protect your hearing and your baby's, great gifts for baby and kids. ? HIGH FIDELITY AND SOODTHING SOUNDS - White noise machine has different fan sounds, kinds of noise, lullabies, relaxing natural sounds(thunderstorm, ocean, rain, birds, stream), and fetal heart sounds. The white noise machine can effectively cover up destructive or startling sounds to protect your sleep quality.